23. Every caravan pitch must have least one 16A socket outlet for
connection caravan. the industrial type
b. everyone may work ‘live’
b. only instructed and skilled people may work ‘live’. RCD protection
c. IPX7 protection
d. The Electricity Work Regulations state that:
a. Zone protection. protected additionally RCD
d.365
U W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
To phase motor
19.
26. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V system.
21. continuity test
b.
. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V cable sheath supply. All final circuits bathroom, both power and lighting, must have:
a. earth fault loop impedance
c.
24.
27. buried depth 600mm. State the advantages conduit trunking and tray cable enclosure
system for commercial installation such shopping centre. only competent people may work ‘live’
d. polarity test.
25.
22. protected from overcurrent
c. Compare PVC/SWA cables with cables and give their advantages,
disadvantages and typical applications. Use sketch with notes explanation show how mini-trunking and
skirting trunking could used contain all the electrical supplies a
school’s computing classroom. The socket outlet must be:
a. functional test
d. Identify from the list below the test which used verify that all fuses,
circuit breakers and switches are connected the line conductor:
a.
20. one may work ‘live’
c. overcurrent protection
b
